Question

Suppose you are holding a rock (which is denser than water), while sitting in a canoe which is floating on a lake. Which of the following will occur if you throw the rock into the lake?

a- The water level in the lake drops because the rock displaces more water when it is in the lake

b- The water level in the lake rises because the rock displaces less water when it is in the lake

c- The water level in the lake drops because the rock displaces less water when it is in the lake

d- The water level in the lake rises because the rock displaces more water when it is in the lake

Answer 1

When you throw the rock into the lake, the water level in the lake rises because the rock displaces more water.

Step-by-step explanation:

When you throw the rock into the lake, the water level in the lake rises because the rock displaces more water. According to Archimedes' Principle, an object submerged in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced by the object.

The buoyant force is greater when the object displaces a larger volume of water. Since the rock is denser than water, it will displace a significant amount of water and cause the water level to rise.